Why Do We Bend Our Arms When We Run?

Why Do We Bend Our Arms When We Run?
AP Photo/Martin Mejia

When you're walking or running, your legs are doing most of the work, but your arms are involved, too. And how they move depends on your gait.

As we walk, our arms usually hang naturally at our sides and are mostly straight. But when we run, our arms typically swing while bent at the elbow.

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